A crevalle jack, Caranx hippos (Pisces, Carangidae), with a mandibular calcified connective tissue fibroma
An 84 cm adult crevalle jack, Caranx hippos, was caught on hook and line off Murrill's Inlet, South Carolina, with enlarged bulbous mandibles. Staining and sectioning revealed bony tissue throughout these bulges and ruled out parasitic copepods as possible causal agents of the bulges. The fish was normal in all respects. The tumor was unencapsulated and non-invasive. Radiographs revealed no metastases.